Lucent Technologies MERLIN LEGEND Release 7.0 Feature Reference page 183

MERLIN LEGEND Communications System Release 7.0
Feature Reference 555-670-110
Features
Callback
Pools
Primary Rate
Interface and T1
Recall/Timed Flash
Reminder Service
Remote Access
Service Observing
SMDR
Speed Dial
System Access/
Intercom Buttons
In Hybrid/PBX mode, Callback can be used to complete calls to an
outside number only when all lines/trunks in the pool are busy.
Callback cannot be used to request a busy PRI line assigned as a
personal line, but it can be used to request a line from a pool of PRI
lines. An idle PRI line is not considered an available pool member
unless a check determines that it is associated with an available
B-channel. Even if a B-channel is available when the pool selects a
line for a queued call, there may be none available when it is time to
send a setup message to the network. Or, after the setup message
is sent, the network may determine that the B-channel proposed by
the system is not available. In either case, the call fails and a fast
busy tone is applied.
Some applications (such as video systems) that use data lines may
work improperly when releasing data facilities requested by
Callback.
If Recall is used while a user is off-hook with a queued Callback
request, the call is disconnected and the user hears dial tone.
Reminder calls cannot be queued by using Callback.
If the system is programmed for remote access, remote access
users can use Callback. (The factory setting for Automatic Callback
is off, but you can enable this feature in Hybrid/PBX mode only for
remote access callers.) The user cannot hang up, but must wait on
the line until the extension or pool is available.
In Release 6.1 and later systems a Service Observer can observe a
callback call after the called extension answers the call.
SMDR begins measuring the duration of a callback call when the
call is completed.
When a Stop character is programmed as part of a Speed Dial
number, stay on the line, wait for the callback call, and then
reactivate Speed Dial. This signals the system to continue dialing
the digits following the Stop character.
Callback can be used on an SA or ICOM button. When Callback is
used on an SSA button, the callback call from the system rings (and
the LED next to the button flashes) only at the telephone that
originated Callback.
If a user other than the person originating Callback selects a Shared
SA button with a queued callback request and lifts the handset, the
user hears the queuing tone, and the green LED on the originator's
telephone goes from flashing to on. If the user hangs up, the green
LED on the originator's telephone goes back to flashing and the
system directs the callback call to the originator. If the user does not
hang up, the system directs the callback call to the user and not to
the callback originator.
Issue 1
April 1999
123